./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca0a592612bf67ed64c0cb4dbe07151d7191a8039e0f3c4eacc12cd10ecaa237 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:05:24,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:05:24,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:05:24,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:05:24,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:05:24,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:05:24,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:05:24,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:05:24,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:05:24,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:05:24,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:05:24,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:05:24,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:05:24,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:05:24,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:05:24,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:05:24,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:05:24,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:05:24,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:05:24,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:05:24,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:05:24,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:05:24,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:05:24,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:05:24,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:05:24,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:05:24,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:05:24,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:05:24,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:05:24,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:05:24,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:05:24,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:05:24,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:05:24,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:05:24,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:05:24,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:05:24,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:05:24,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:05:24,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:05:24,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:05:24,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:05:24,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:05:24,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:05:24,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:05:24,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:05:24,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:05:24,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:05:24,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:05:24,957 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:05:24,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:05:24,957 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:05:24,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:05:24,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:05:24,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:05:24,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:05:24,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:05:24,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:05:24,959 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:05:24,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:05:24,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:05:24,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:05:24,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:05:24,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:05:24,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:05:24,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:05:24,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:05:24,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:05:24,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:05:24,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:05:24,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:05:24,961 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:05:24,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:05:24,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:05:24,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:05:24,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca0a592612bf67ed64c0cb4dbe07151d7191a8039e0f3c4eacc12cd10ecaa237 [2021-11-02 22:05:25,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:05:25,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:05:25,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:05:25,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:05:25,236 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:05:25,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i [2021-11-02 22:05:25,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/data/7440ff66f/fd5ccbb63f5e4cfb953ea3ceb228dc57/FLAGedaecb5f6 [2021-11-02 22:05:25,950 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:05:25,952 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i [2021-11-02 22:05:25,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/data/7440ff66f/fd5ccbb63f5e4cfb953ea3ceb228dc57/FLAGedaecb5f6 [2021-11-02 22:05:26,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/data/7440ff66f/fd5ccbb63f5e4cfb953ea3ceb228dc57 [2021-11-02 22:05:26,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:05:26,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:05:26,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:05:26,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:05:26,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:05:26,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:05:26" (1/1) ... [2021-11-02 22:05:26,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71af65b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:26, skipping insertion in model container [2021-11-02 22:05:26,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:05:26" (1/1) ... [2021-11-02 22:05:26,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:05:26,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:05:26,775 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i[33021,33034] [2021-11-02 22:05:26,903 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i[45234,45247] [2021-11-02 22:05:26,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:05:26,936 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:05:26,994 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i[33021,33034] [2021-11-02 22:05:27,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i[45234,45247] [2021-11-02 22:05:27,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:05:27,203 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:05:27,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27 WrapperNode [2021-11-02 22:05:27,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:05:27,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:05:27,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:05:27,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:05:27,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:05:27,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:05:27,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:05:27,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:05:27,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:05:27,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:05:27,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:05:27,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:05:27,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (1/1) ... [2021-11-02 22:05:27,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:05:27,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:05:27,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:05:27,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:05:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:05:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:05:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:05:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:05:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:05:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:05:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:05:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:05:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:05:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:05:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:05:29,180 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:05:29,181 INFO L299 CfgBuilder]: Removed 136 assume(true) statements. [2021-11-02 22:05:29,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:05:29 BoogieIcfgContainer [2021-11-02 22:05:29,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:05:29,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:05:29,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:05:29,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:05:29,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:05:26" (1/3) ... [2021-11-02 22:05:29,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77abe623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:05:29, skipping insertion in model container [2021-11-02 22:05:29,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:27" (2/3) ... [2021-11-02 22:05:29,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77abe623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:05:29, skipping insertion in model container [2021-11-02 22:05:29,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:05:29" (3/3) ... [2021-11-02 22:05:29,191 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-1.i [2021-11-02 22:05:29,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:05:29,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-02 22:05:29,248 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:05:29,254 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:05:29,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-02 22:05:29,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 270 states have (on average 1.7925925925925925) internal successors, (484), 301 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:05:29,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:05:29,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:05:29,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:05:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:05:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash -109840528, now seen corresponding path program 1 times [2021-11-02 22:05:29,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:05:29,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503275231] [2021-11-02 22:05:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:29,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:05:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:05:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:05:29,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:05:29,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503275231] [2021-11-02 22:05:29,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503275231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:05:29,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:05:29,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:05:29,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827403820] [2021-11-02 22:05:29,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:05:29,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:05:29,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:05:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:05:29,492 INFO L87 Difference]: Start difference. First operand has 302 states, 270 states have (on average 1.7925925925925925) internal successors, (484), 301 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:05:29,541 INFO L93 Difference]: Finished difference Result 602 states and 966 transitions. [2021-11-02 22:05:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:05:29,543 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-02 22:05:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:05:29,576 INFO L225 Difference]: With dead ends: 602 [2021-11-02 22:05:29,577 INFO L226 Difference]: Without dead ends: 298 [2021-11-02 22:05:29,582 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:05:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-02 22:05:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-02 22:05:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 267 states have (on average 1.4344569288389513) internal successors, (383), 297 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 383 transitions. [2021-11-02 22:05:29,645 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 383 transitions. Word has length 9 [2021-11-02 22:05:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:05:29,645 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 383 transitions. [2021-11-02 22:05:29,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 383 transitions. [2021-11-02 22:05:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 22:05:29,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:05:29,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:05:29,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:05:29,649 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:05:29,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:05:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash 518597571, now seen corresponding path program 1 times [2021-11-02 22:05:29,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:05:29,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121326736] [2021-11-02 22:05:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:29,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:05:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:05:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:05:29,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:05:29,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121326736] [2021-11-02 22:05:29,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121326736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:05:29,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:05:29,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:05:29,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890047510] [2021-11-02 22:05:29,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:05:29,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:05:29,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:05:29,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:05:29,737 INFO L87 Difference]: Start difference. First operand 298 states and 383 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:30,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:05:30,204 INFO L93 Difference]: Finished difference Result 619 states and 798 transitions. [2021-11-02 22:05:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:05:30,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-02 22:05:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:05:30,209 INFO L225 Difference]: With dead ends: 619 [2021-11-02 22:05:30,209 INFO L226 Difference]: Without dead ends: 474 [2021-11-02 22:05:30,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:05:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-02 22:05:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 300. [2021-11-02 22:05:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 269 states have (on average 1.4312267657992566) internal successors, (385), 299 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 385 transitions. [2021-11-02 22:05:30,259 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 385 transitions. Word has length 44 [2021-11-02 22:05:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:05:30,260 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 385 transitions. [2021-11-02 22:05:30,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 385 transitions. [2021-11-02 22:05:30,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:05:30,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:05:30,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:05:30,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:05:30,263 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:05:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:05:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1543983351, now seen corresponding path program 1 times [2021-11-02 22:05:30,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:05:30,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921719955] [2021-11-02 22:05:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:30,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:05:30,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:05:30,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680401810] [2021-11-02 22:05:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:30,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:05:30,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:05:30,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:05:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:05:30,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:05:30,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:05:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:05:30,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:05:30,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921719955] [2021-11-02 22:05:30,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:05:30,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680401810] [2021-11-02 22:05:30,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680401810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:05:30,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:05:30,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:05:30,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120825071] [2021-11-02 22:05:30,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:05:30,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:05:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:05:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:05:30,757 INFO L87 Difference]: Start difference. First operand 300 states and 385 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:05:30,837 INFO L93 Difference]: Finished difference Result 617 states and 797 transitions. [2021-11-02 22:05:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:05:30,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 22:05:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:05:30,840 INFO L225 Difference]: With dead ends: 617 [2021-11-02 22:05:30,841 INFO L226 Difference]: Without dead ends: 321 [2021-11-02 22:05:30,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:05:30,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-02 22:05:30,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-11-02 22:05:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 289 states have (on average 1.4013840830449826) internal successors, (405), 319 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 405 transitions. [2021-11-02 22:05:30,869 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 405 transitions. Word has length 57 [2021-11-02 22:05:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:05:30,874 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 405 transitions. [2021-11-02 22:05:30,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 405 transitions. [2021-11-02 22:05:30,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:05:30,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:05:30,877 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:05:30,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:05:31,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:31,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:05:31,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:05:31,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1379176647, now seen corresponding path program 1 times [2021-11-02 22:05:31,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:05:31,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651036055] [2021-11-02 22:05:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:31,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:05:31,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:05:31,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752722342] [2021-11-02 22:05:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:31,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:31,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:05:31,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:05:31,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:05:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:05:31,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:05:31,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:05:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:05:31,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:05:31,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651036055] [2021-11-02 22:05:31,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:05:31,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752722342] [2021-11-02 22:05:31,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752722342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:05:31,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:05:31,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:05:31,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811493992] [2021-11-02 22:05:31,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:05:31,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:05:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:05:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:05:31,515 INFO L87 Difference]: Start difference. First operand 320 states and 405 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:05:31,601 INFO L93 Difference]: Finished difference Result 628 states and 798 transitions. [2021-11-02 22:05:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:05:31,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 22:05:31,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:05:31,604 INFO L225 Difference]: With dead ends: 628 [2021-11-02 22:05:31,604 INFO L226 Difference]: Without dead ends: 312 [2021-11-02 22:05:31,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:05:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-02 22:05:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2021-11-02 22:05:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 275 states have (on average 1.3963636363636365) internal successors, (384), 305 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 384 transitions. [2021-11-02 22:05:31,629 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 384 transitions. Word has length 57 [2021-11-02 22:05:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:05:31,630 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 384 transitions. [2021-11-02 22:05:31,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 384 transitions. [2021-11-02 22:05:31,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:05:31,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:05:31,638 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:05:31,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:05:31,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:31,864 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:05:31,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:05:31,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1996694677, now seen corresponding path program 1 times [2021-11-02 22:05:31,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:05:31,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494937655] [2021-11-02 22:05:31,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:31,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:05:31,891 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:05:31,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382941894] [2021-11-02 22:05:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:31,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:31,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:05:31,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:05:31,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:05:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:05:32,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:05:32,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:05:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:05:32,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:05:32,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494937655] [2021-11-02 22:05:32,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:05:32,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382941894] [2021-11-02 22:05:32,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382941894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:05:32,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:05:32,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:05:32,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125901050] [2021-11-02 22:05:32,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:05:32,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:05:32,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:05:32,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:05:32,428 INFO L87 Difference]: Start difference. First operand 306 states and 384 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:05:32,512 INFO L93 Difference]: Finished difference Result 779 states and 977 transitions. [2021-11-02 22:05:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:05:32,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 22:05:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:05:32,520 INFO L225 Difference]: With dead ends: 779 [2021-11-02 22:05:32,521 INFO L226 Difference]: Without dead ends: 477 [2021-11-02 22:05:32,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:05:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-02 22:05:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 444. [2021-11-02 22:05:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 413 states have (on average 1.3995157384987893) internal successors, (578), 443 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 578 transitions. [2021-11-02 22:05:32,542 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 578 transitions. Word has length 57 [2021-11-02 22:05:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:05:32,544 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 578 transitions. [2021-11-02 22:05:32,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 578 transitions. [2021-11-02 22:05:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:05:32,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:05:32,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:05:32,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:05:32,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:32,767 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:05:32,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:05:32,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1378561412, now seen corresponding path program 1 times [2021-11-02 22:05:32,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:05:32,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233277551] [2021-11-02 22:05:32,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:32,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:05:32,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:05:32,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106353151] [2021-11-02 22:05:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:32,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:32,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:05:32,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:05:32,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:05:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:05:33,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:05:33,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:05:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:05:33,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:05:33,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233277551] [2021-11-02 22:05:33,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:05:33,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106353151] [2021-11-02 22:05:33,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106353151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:05:33,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:05:33,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:05:33,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528705307] [2021-11-02 22:05:33,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:05:33,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:05:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:05:33,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:05:33,214 INFO L87 Difference]: Start difference. First operand 444 states and 578 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:05:33,245 INFO L93 Difference]: Finished difference Result 842 states and 1107 transitions. [2021-11-02 22:05:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:05:33,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 22:05:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:05:33,249 INFO L225 Difference]: With dead ends: 842 [2021-11-02 22:05:33,249 INFO L226 Difference]: Without dead ends: 446 [2021-11-02 22:05:33,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:05:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-02 22:05:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-02 22:05:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 415 states have (on average 1.3975903614457832) internal successors, (580), 445 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 580 transitions. [2021-11-02 22:05:33,272 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 580 transitions. Word has length 64 [2021-11-02 22:05:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:05:33,272 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 580 transitions. [2021-11-02 22:05:33,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 580 transitions. [2021-11-02 22:05:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 22:05:33,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:05:33,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:05:33,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:05:33,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-02 22:05:33,496 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:05:33,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:05:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1147149435, now seen corresponding path program 1 times [2021-11-02 22:05:33,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:05:33,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328975255] [2021-11-02 22:05:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:33,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:05:33,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:05:33,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380987390] [2021-11-02 22:05:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:33,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:05:33,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:05:33,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:05:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:05:33,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:05:33,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:05:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:05:33,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:05:33,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328975255] [2021-11-02 22:05:33,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:05:33,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380987390] [2021-11-02 22:05:33,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380987390] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:05:33,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:05:33,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-02 22:05:33,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282689414] [2021-11-02 22:05:33,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:05:33,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:05:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:05:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:05:33,938 INFO L87 Difference]: Start difference. First operand 446 states and 580 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:05:33,979 INFO L93 Difference]: Finished difference Result 846 states and 1111 transitions. [2021-11-02 22:05:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:05:33,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 22:05:33,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:05:33,985 INFO L225 Difference]: With dead ends: 846 [2021-11-02 22:05:33,985 INFO L226 Difference]: Without dead ends: 448 [2021-11-02 22:05:33,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:05:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-02 22:05:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-11-02 22:05:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 417 states have (on average 1.39568345323741) internal successors, (582), 447 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 582 transitions. [2021-11-02 22:05:34,001 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 582 transitions. Word has length 66 [2021-11-02 22:05:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:05:34,006 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 582 transitions. [2021-11-02 22:05:34,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:05:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 582 transitions. [2021-11-02 22:05:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 22:05:34,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:05:34,007 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:05:34,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:05:34,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:34,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:05:34,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:05:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash -774761572, now seen corresponding path program 2 times [2021-11-02 22:05:34,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:05:34,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586121991] [2021-11-02 22:05:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:05:34,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:05:34,236 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:05:34,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535794613] [2021-11-02 22:05:34,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:05:34,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:05:34,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:05:34,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:05:34,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:09:47,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:09:47,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:09:47,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:09:47,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:09:48,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:48,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586121991] [2021-11-02 22:09:48,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:09:48,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535794613] [2021-11-02 22:09:48,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535794613] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:48,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:09:48,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:09:48,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830357597] [2021-11-02 22:09:48,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:09:48,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:48,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:09:48,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:09:48,109 INFO L87 Difference]: Start difference. First operand 448 states and 582 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:48,168 INFO L93 Difference]: Finished difference Result 850 states and 1115 transitions. [2021-11-02 22:09:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:09:48,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 22:09:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:48,172 INFO L225 Difference]: With dead ends: 850 [2021-11-02 22:09:48,173 INFO L226 Difference]: Without dead ends: 450 [2021-11-02 22:09:48,174 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:09:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-02 22:09:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-02 22:09:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 419 states have (on average 1.3937947494033414) internal successors, (584), 449 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 584 transitions. [2021-11-02 22:09:48,193 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 584 transitions. Word has length 68 [2021-11-02 22:09:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:48,193 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 584 transitions. [2021-11-02 22:09:48,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 584 transitions. [2021-11-02 22:09:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:09:48,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:48,200 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:09:48,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:48,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-02 22:09:48,401 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-02 22:09:48,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:48,401 INFO L85 PathProgramCache]: Analyzing trace with hash -264785445, now seen corresponding path program 3 times [2021-11-02 22:09:48,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:48,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572477300] [2021-11-02 22:09:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:48,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:48,422 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:09:48,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54122051] [2021-11-02 22:09:48,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:09:48,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:48,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:09:48,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:09:48,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_932fb5ae-bbb9-4ba0-a006-69a73399889b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process